Steam-radiator



(No Model.)

H. MACDONALD.

STEAM RADIATOR.

No. 271,723. Patented Feb. 6,1883.

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NTTnn STATES ATnNT HUGH MACDONALD, OF DETROIT, MICHIGAN.

SPECIFICATION forming part of Letters Patent No. 271,723, dated February', 1883. Application filed September 16, 1882. (No model.)

To all whom 'it may concern Be it; known that l, HUGH MACDONALD, of Detroit, in the county of Wayne and State of Michigan, have invented new and useful Improveinents in Steam -Radiators; and I do hereby declare that the following. is a full, clear, and exact description thereof, reference heing had to the accompanying drawings, which form a part of this specification.

The nature ot' this invention relates to certain new and useful improvements in the construction arid operation of steam-radiators, by means of which a perfect circulation of fresh air is discharged in a heated cotiditioii iiito the rooni, such air being taken from outside, and by means of which, also, the colder stratum of air always found near the floor is heated at will and again discharged into the room.

- The invention consists in the peculiar construction ot' parts and their various combinations, as more fully hereinafterdescribed.

Figure l is a front elevation of my device with a portion of the shell broken out. Fig. 2 is a vertical cross-section of the same, showing its connection with the fresh-'airinleh Fig. 3 is a plan with the top removed.

In the accompanying drawings, which form a part of this specitication, A represents a metallic box ot' any suitable form or size, the

vouter faces ot' which may be oriiainented in any ot the known ways, such ornamentation being designed to the style of the inish ot' the room in which the device is situated. This box is steam-tight, and provided with an inlet-pipe, a, designed to he attached to any suitable source ot' steam-supply, and with an outlet-pipe, b, to discharge the water of condensation, and this pipe is designed to be connected with any proper drip. The bottom c ofthis box is perforated as well as the top d, the perforations in each being coincident to receive the pipes 15,' which are secured in the perforations in any ot' the known ways of inaking tightjoints in such connections.

C is an inclosed chamber below the bottom ofthe box A, and this chamber is designed to connect with an air-inlet, D, the opposite end of which is carried through the wall E and opens into the outside air. A valve, F., is arranged to open or close the upper end of the air-inlet pipe by nie-ans of a rod, e, which projects through the front wall of the chamber;

or it may be arranged in any other position, so that the damper or valve may be operated from outside the device. G is another chamber upon top of the steam-box A, and into this chamber the pipes B open, afordingcomninnication th rough the steam-box between the chambers C and D. The side wallsof this upper chamber, G, are ornamentally perforated to allow the air to escape into the room, and the top fofthis chamber may be'an imperforate vor a perforate top, as may be desired.

H is an inlet-register, situated in one of the walls of the chamber O, and this register may be so arranged as to be closed or opened, as preferred.

In operation the steam-box A is filled with steam, heat being-directly radiated into the room through the walls of said box, while fresh air admitted through the inlet passes upl through the pipes B, located within the steamchamber, and, becoming highly heated in the passage through such pipes, is discharged into the upper chatnber, and thence into the room, thereby furnishing a constant and steady stipply of fresh warm air. The colder stratum of air near the door enters through the register in the bottom chamber, and follows the saine course as that described as being followed by the fresh-air currents, and by this means a very even temperature of theiooi'nis obtained. By this construction and operation of a steamradiator a very perfect device is obtained for heating and ventilatingataininimumexpenditure ot' fuel. Y

The valve F, it will be observed, is arranged below the register H, and is so formed that when partly open a certain percentage of the fresh cold air is dellected toward and through the register when the register is open. This construction is useful when itis desired to renovate or cool the atmosphere of an apartment quickly, and in any event bothvalve atid register are separately and independently under the ready supervision ofthe operator.

lhat I claim as my invention isl. The steam-radiator herein described, consisting of thesteam-tight chamber A ab, arranged around a series of vertical pipes, B, connecting a fresh-air chamber, C, below with an open hot-air chamber, G, above the register H, fresh-air pipe D, the valve F in such freshair inlet, arranged below the register H, and

IOO

the rod e, arranged adjacent to the means for l and adapted, when partlyY open, to deflect the operating' the register, :is specified. l' incoming fresh air through such register, as

2. Thesteam-radiator herein described, coni seb forth.

sistingof' the steznn-clnunher A a b, fresh-air'- HUGH MACDONALD.

5 chamber (l, having' reginter H, open hot-nir \Vit1iessrs;

chamber Gr, and pipes B, the fresh-air inlet D ,lrI. S. SPRAGUE, having valve F arranged below the register, F. SCULLY. 

